Carbon holder



M h 29, 1949. 'L. K. FLEISCHMAm 2,465,860

CARBON HOLDER Filed Oct. 15, 1945 2 Sheets-Sheet 1 g 6 f I Z 3 L Z r 2 5 /1 /7 I [7(V/ZZO2 29, 1949. w K. FLEISCHMANN 2,465,860

, CARBON HOLDER Filed Oct 15, 1945 2 Sheets-Sheet 2 29 it I 50 Patented Mar. 29, 1949 CARBON HOLDER Lester K. Fleischmann, Chicago, 111., assignor to Standard Manifold Company, 1110., a corporation of Illinois Application October 13, 1945, Serial No. 622,130

8 Claims.

This invention relates to carbon holders, and more particularly to carbon holders adapted to hold a small roll of carbon between the strips of continuous form stationery and permit the end of the carbon strip to extend forwardly in interleaved relation with the stationery.

The primary object of the invention is to provide a very light and inexpensive carbon holder, which may be installed on existing typewriting machines adapted for use in connection with continuous form stationery, and particularly in connection with such machines as have a retractable carbon carriage.

Another object of the invention is to provide a carbon holder wherein a flat carbon roll may be stored between the strips of continuous form stationery, and is hinged to the typewriting machine, so that the roll may be raised upwardly to provide sufficient clearance for the roll to be turned to unwind carbon.

Still another object of the invention is to provide an improved carbon holder wherein the carbon strip is led rearwardly about a guide bar and then forwardly into writing position.

The invention is illustrated in a preferred embodiment in the accompanying drawings, in which- Figure 1 is a plan view of the device attached to the conventional carbon-holding blade of a typewriting machine; Fig. '2, an end elevational view of a fiat roll of carbon adapted to be used with the device; Fig. 3, an expanded end elevational view of a series of carbon holders, taken as indicated at line 3-3 of Fig. 1; Fig. 4, a transverse sectional view of the cross-bar, taken as indicated at line 4-4 of Fig. 1; Fig. 5, a view similar to Fig. 1, showing a modified device; Fig. 6, a transverse sectional View, taken as indicated at line 6-6 of Fig. and Fig. '7, an enlarged fragmentary sectional view of the handle portion of the carbon roll shaft shown in Fig. 5.

In the embodiment illustrated in Fig. l, a carbon holder is shown which is adapted for use with fanfold stationery, i. e., stationery wherein the strips are connected along one lateral edge. The ordinary typewriting machine adapted for use with continuous form stationery usually has a thin metal carbon blade 8, which is secured to the carbon carriage of a typewriting machine not shown. The present invention relates to a device adapted to be connected to such a blade, and pref erably has a fabric securing member 9 whose rear edge may be folded over a carbon blade and secured thereto by means of spring clips l0. Preferably the front edge of the securing member is 2 folded rearwardly and stitched, as indicated at H, to provide a loop l3.

A cross-bar I4 is preferably made of metal and is hollow or channel shaped to provide sockets [5 at its ends. In the embodiment shown in Figs. 1-4, a cross-bar is hinged to the securing member 9 by means of a pair of connector members I 6 and H. The member l6 may be made of spring wire, and is shown with a front U-shaped loop portion 18 which is adapted to slip into the socket in one end of the cross-bar It. By pressing the .ends of the loop portion together, it is easy to fit the parts together, and upon releasing the ends the cross-bar is gripped firmly in position. The rear portion of the member I6 is turned inwardly to provide an arm [9 which fits into one end of the loop I3 in the securing member.

The connector member I! also has a rearwardly and inwardly extending arm iii to engage the loop l3, and has a U-shaped loop portion is to engage the cross-bar. However, the member I l is also provided with a forwardly extending arm 20, which is provided with an inward extension gzl which is adapted to fit into a fiat roll of carbon As shown in Fig. 3, a series of carbon holders may be arranged in superposed relation on a series ofcarbon blades. In Fig. 3, strips of carbon 23 are led rearwardly around the cross-bar l4 and then down under the rolls 22 and forwardly in interleaved relation with strips of stationery not shown. By making the connector members It and I! progressively longer, as shown in Fig. 3, the cross-bars [4 will not be registered, and there will be less vertical height required for the assembly. In fanfolded stationery, it will be understood, alternate carbon holders will be supported on opposite sides of the machine, so that their free ends may extend into the folded connected edges of the fanfold stationery.

When properly assembled, the forwardly extending carbon strips will extend in very close to the longitudinal fold line of the stationery. If flat rolls of carbon 22 are used, there is no danger of their unwinding when the carbon carriage is retracted to pull the carbon back into the succeeding set of forms. When the carbon becomes worn, the folded edges of the stationery may be slit and the trunnion 2| and cross-bar l4 turned upwardly at the hinged connection with the securing member 9, and additional carbon may be unwound from the rolls, by merely turning the front of the carbon strips forwardly. It is not essential that the trunnion 2| remain in the center of the roll, as indicated by the dotted lines in Fig. 1, and usually the roll will tend to stay in its rearmost position, with the advancing carbon strip lying a few degrees from parallel with the edges of the stationery, so that it will fit close to the folded edge.

If it is desired to use the carbon holders with different Widths of stationery, it is merely necessary to substitute longer or shorter cross-bars M with the longer or shorter rolls of carbon.

In the modification shown in Fig. 5, the carbon blade 8, securing member 9 and cross-bar I4 are" substantially the same as described above. However, the connecting members 24 have forwardly extending arms 25 provided at their front ends with bearings 26 to receive a carbon roll shaft 21. This form of device is adapted for use in connection with separate strips of stationery. The shaft 21 is preferably provided with a fixed plate 28, which is adapted to fit into a flat roll of carbon. The shaft is provided at one end with a terminal member 29, and at the other end With a handle member 38 which makes a threaded connection with the shaft, as indicated at 3|.

With this device, a carbon roll, indicated by dotted lines at 22, may be unwound by raising the shaft and cross-bar 21 about its connection with its securing member 9 and the roll turned by means of the handle 30.

The foregoing detailed description is given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, for some modifications will be obvious to those skilled in the art.

I claim:

1. A carbon holder for a typewriting machine,

comprising: a securing member adapted to have its rear end attached to the machine; and a guiding and supporting structure making a flexible connection with said securing member, said guiding and supporting structure having at its front end a trunnion for supporting a roll of carbon and having a cross-bar in rear of said trunnion about which a strip of carbon may be led rearwardly from the roll and then forwardly to the front of the machine.

2. A device as specified in claim 1, in which the cross-bar is hollow and provided with sockets at each end for making detachable connection with supporting arms provided on the guiding and supporting structure.

3. A device as specified in claim 1, in which the guiding and supporting structure has a pair of U-shaped sprin arms which releasably engage sockets provided in the ends of the cross-bar.

4. A carbon holder for a typewriting machine, comprising: a securing member adapted to have its rear end attached to the machine; and a guiding and supporting structure making a 4 hinged connection with said securing member, said guiding and supporting structure including a hollow cross-bar provided with sockets at each end, and a pair of wire connector members having yielding U-shaped members adapted to fit into said sockets of the cross-bar, each of said connector members having a rearwardly and inwardly directed arm to fit into said securing member, and one of said connector members having a forwardly and inwardly directed arm to serve as a trunnion for a hollow roll of carbon.

5. A device as specified in claim 4, in which the securing member is made of fabric and has a rear portion adapted to be secured to a blade provided on the typewriting machine.

6. A carbon holder for a typewriting machine, comprising: a securin member adapted to have its rear end attached to the machine; and a guiding and supporting structure making a hinged connection with said securing member, said structure including a hollow cross-bar provided with sockets at each end, and a pair of wire connector members having yielding U-shaped members adapted to fit into said sockets of the cross-bar, each of said connector members having a rearwardly and inwardly directed arm to fit into said securing member and a forwardly extending bearing member, and a transverse carbon roll shaft removably journalled in said bearing members and provided with a plate adapted to fit into a flat roll of carbon paper.

'7. A device as specified in claim 6, in which the carbon roll shaft is provided at one end with a handle by which the shaft may be turned to unwind carbon from the carbon roll.

8. A carbon holder for a typewriting machine, including a guiding and supporting structure having a front trunnion on which a roll of carbon may be mounted, a cross-bar on said structure, in rear of said trunnion, about which a strip of carbon may be led from a roll of carbon on the trunnion and then forwardly beneath said roll, and arms extending rearwardly from the ends of said cross-bar and adapted to make a hinged connection with the typewriting machine, said arms serving also as lateral guides for a carbon strip led around the cross-bar.

LESTER K. FLEISCHMANN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,124,996 Anderson July 26, 1938 2,236,155 Petit Mar. 25, 1941 2,292,343 McAlvin Aug. 4, 1942 

